The sense of smell in people is not as developed as in dogs, but we can distinguish and remember about 50 000 different scents.
In mature person the aggregate length of the insides is longer by around the 4 times of its normal stature.
On every square centimetre of the outer surface of the skin has about 5 million bacteria. Do not worry, most of them are not harmful to our health.
Air passing through our airways when snorted reaches speeds up 160km/h. Now we have a good enough reason to cover your nose and mouth when you sneeze.
If blood vessels that are in the body are set next to each other, they would exceed the length of 100 000 km.
The human heart can pumps an average of 7,500 liters of blood daily.
The length of the human head occupies ¼ of the body at birth and only about ⅛ of the body of adults. No wonder babies have difficulty of adjusting to their head :)
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